This terminus of Mendenhall Glacier near Juneau shows several glacial features. At this ablation zone, the tidewater glacier will shed large sheets of ice into Mendenhall Lake. This process is called calving. Notice the complex structure of ridges, facets, crevasses and suncups that reflect the color blue. The black streaks are crushed sediment and rock called moraine. The vegetation-free rock is the barren zone and the grooves are chatter marks.
